Hi @john.mcinnis,
I understand that you prefer using Buildroot over Yocto. But here you can find an alternative guide for using Yocto on Jetson devices Yocto Support for NVIDIA Jetson Platforms - Yocto Support for NVIDIA Jetson Platforms
It is a good starting point if you want a customizable Embedded OS for the Jetson Family.
Here at RidgeRun we understand the importance of good guides and documented steps, which meta-tegra lacks a lot. We have been validating and will be contributing to the community meta-tegra. We also provide professional support if needed.
Regards,
Fabian
www.ridgerun.com